Creating route based on image analysis or reasoning

ABSTRACT

A method, system and computer program product for creating a route are disclosed. In embodiments, the method comprises identifying a start location and a destination for a user; identifying defined needs of the user; obtaining satellite imagery of a specified area between the start location and the destination. The satellite imagery is analyzed to identify defined local features affecting the defined needs of the user in the specified area; and a route is selected for the user, from the start location to the destination, based on the defined local features in the specified area. In embodiments, selecting the route includes identifying a plurality of candidate routes from the start location to the destination; generating a score for each of the candidate routes using the defined local features, and selecting one of the candidate routes based on the generated scores for the candidate routes.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of copending patent application Ser.No. 15/892,830, filed Feb. 9, 2018, which is a continuation of patentapplication Ser. No. 15/625,456, filed Jun. 16, 2017, which is acontinuation of patent application Ser. No. 15/048,046, filed Feb. 19,2016. The entire contents and disclosures of U.S. patent applicationSer. Nos. 15/892,830, 15/625,456 and 15/048,046 are hereby incorporatedherein by reference in their entireties.

BACKGROUND

This invention generally relates to personal navigation methods andsystems, and more specifically, to creating routes for individuals basedon image analysis and special needs of the individuals.

The majority of conventional computerized navigation systems aredesigned for directing vehicles from a source to a destination based ona start address and an end address. Such conventional systems can alsorecalculate a route based on dynamic information such as a missed turn.Other systems are available for hikers which provide a general directionof travel needed to reach an input destination. Other systems providenavigational assistance to pedestrians, and these systems generallyidentify a route for a pedestrian based on an estimated shortest time ordistance to a destination. For example, many different types of globalpositioning system (GPS) based navigation systems are currentlyavailable.

These conventional systems have important disadvantages or limitations.For instance, personal navigation systems might not adequately take intoaccount special needs of pedestrians, cyclists and people withdisabilities to determine what would be the best route to take for thatmoment.

SUMMARY

Embodiments of the invention provide a method, system and computerprogram product for creating a route for a user based on satelliteimagery analysis. In embodiments, the method comprises identifying astart location and a destination for the user; identifying defined needsof the user; obtaining satellite imagery of a specified area between thestart location and the destination; analyzing the satellite imagery toidentify defined local features affecting said defined needs of the userin the specified area; and selecting a route for the user, from thestart location to the destination, based on said defined local featuresin the specified area.

In embodiments, the selecting a route includes identifying a pluralityof candidate routes from the start location to the destination;generating a score for each of the candidate routes using the definedlocal features, and selecting one of the plurality of candidate routesbased on the generated scores for the candidate routes.

In embodiments, the generating a score for each of the candidate routesincludes identifying a group of variables based on the defined needs ofthe user, and using said group of variables to generate said score.

In embodiments, the analyzing the satellite imagery includes identifyinga multitude of variable features in the satellite imagery, andprioritizing the variable features to analyze the satellite imagerythrough image recognition and extrapolation software.

In embodiments, the identifying a multitude of variable featuresincludes assigning a weight to each of said variable features.

In embodiments, the user is walking from the start location to thedestination, and the selected route is a best route for walking from thestart location to the destination based on given criteria.

In embodiments, the user is riding a bicycle, and the defined needs ofthe user are due to the user riding the bicycle.

In embodiments, the user is in a wheelchair, and the defined needs ofthe user are due to the user being in the wheelchair.

In embodiments, the identifying the defined needs of the user includesthe user inputting a specified condition of the user, and using thespecified condition to determine the defined needs.

In embodiments, the analyzing the satellite imagery includes analyzingthe satellite imagery for sidewalk width, sidewalk ramps, sidewalkobstacles, terrain, slope, lane width, traffic flow, street direction,and pedestrian crossing signals.

Embodiments of the invention generate a route based on image recognitionfor pedestrians, cyclists or wheelchairs, for example. The system usesseveral variables to determine the best route. Sidewalk width, sidewalkramps, terrain of sidewalk and streets, estimated numbers of cars on thestreet and number of lanes of vehicular traffic are some of thevariables that may be used. This information comes from analyzing thesatellite images of a number of possible routes from the user's locationto the requested destination.

Embodiments of the invention accomplish a number of tasks. For instance,embodiments of the invention display the best route based on imagerecognition and user definition of his or her special needs. Also,embodiments of the invention recalculate the route when the defined pathhas been changed by the user, and recalculate routes based on newsatellite imaging.

A number of important advantages are achieved with embodiments of theinvention. For example, a person with special needs, like a person on awheelchair, can select the best route to his or her destination. Thiswill help a person with special needs get the best route based on thatperson's specific needs. As another example, a cyclist will get the bestroute based on the most friendly environment for the cyclist's means oftransportation. Also, a pedestrian will get the best route for walkingpurposes. The selection is not based on the route itself, but on thebest sidewalks, parks and pedestrian crossing signals along the route.

DRAWINGS

FIG. 1 is a schematic representation of a navigation system inaccordance with an embodiment of the invention.

FIG. 2 is a flow diagram of an embodiment of the invention.

FIG. 3 illustrates an algorithm for identifying a best route for aperson based on special needs.

FIG. 4 shows a plurality of possible routes between a start location anda destination.

FIG. 5 shows a block diagram of a data processing system that may beused in embodiments of this invention.

DETAILED DESCRIPTION

The present invention may be a system, a method, and/or a computerprogram product. The computer program product may include a computerreadable storage medium (or media) having computer readable programinstructions thereon for causing a processor to carry out aspects of thepresent invention.

The computer readable storage medium can be a tangible device that canretain and store instructions for use by an instruction executiondevice. The computer readable storage medium may be, for example, but isnot limited to, an electronic storage device, a magnetic storage device,an optical storage device, an electromagnetic storage device, asemiconductor storage device, or any suitable combination of theforegoing. A non-exhaustive list of more specific examples of thecomputer readable storage medium includes the following: a portablecomputer diskette, a hard disk, a random access memory (RAM), aread-only memory (ROM), an erasable programmable read-only memory (EPROMor Flash memory), a static random access memory (SRAM), a portablecompact disc read-only memory (CD-ROM), a digital versatile disk (DVD),a memory stick, a floppy disk, a mechanically encoded device such aspunch-cards or raised structures in a groove having instructionsrecorded thereon, and any suitable combination of the foregoing. Acomputer readable storage medium, as used herein, is not to be construedas being transitory signals per se, such as radio waves or other freelypropagating electromagnetic waves, electromagnetic waves propagatingthrough a waveguide or other transmission media (e.g., light pulsespassing through a fiber-optic cable), or electrical signals transmittedthrough a wire.

Computer readable program instructions described herein can bedownloaded to respective computing/processing devices from a computerreadable storage medium or to an external computer or external storagedevice via a network, for example, the Internet, a local area network, awide area network and/or a wireless network. The network may comprisecopper transmission cables, optical transmission fibers, wirelesstransmission, routers, firewalls, switches, gateway computers and/oredge servers. A network adapter card or network interface in eachcomputing/processing device receives computer readable programinstructions from the network and forwards the computer readable programinstructions for storage in a computer readable storage medium withinthe respective computing/processing device.

Computer readable program instructions for carrying out operations ofthe present invention may be assembler instructions,instruction-set-architecture (ISA) instructions, machine instructions,machine dependent instructions, microcode, firmware instructions,state-setting data, or either source code or object code written in anycombination of one or more programming languages, including an objectoriented programming language such as Smalltalk, C++ or the like, andconventional procedural programming languages, such as the “C”programming language or similar programming languages. The computerreadable program instructions may execute entirely on the user'scomputer, partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computeror entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).In some embodiments, electronic circuitry including, for example,programmable logic circuitry, field-programmable gate arrays (FPGA), orprogrammable logic arrays (PLA) may execute the computer readableprogram instructions by utilizing state information of the computerreadable program instructions to personalize the electronic circuitry,in order to perform aspects of the present invention.

Aspects of the present invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems), and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer readable program instructions.

These computer readable program instructions may be provided to aprocessor of a general purpose computer, special purpose computer, orother programmable data processing apparatus to produce a machine, suchthat the instructions, which execute via the processor of the computeror other programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks. These computer readable program instructionsmay also be stored in a computer readable storage medium that can directa computer, a programmable data processing apparatus, and/or otherdevices to function in a particular manner, such that the computerreadable storage medium having instructions stored therein comprises anarticle of manufacture including instructions which implement aspects ofthe function/act specified in the flowchart and/or block diagram blockor blocks.

The computer readable program instructions may also be loaded onto acomputer, other programmable data processing apparatus, or other deviceto cause a series of operational steps to be performed on the computer,other programmable apparatus or other device to produce a computerimplemented process, such that the instructions which execute on thecomputer, other programmable apparatus, or other device implement thefunctions/acts specified in the flowchart and/or block diagram block orblocks.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods, and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof instructions, which comprises one or more executable instructions forimplementing the specified logical function(s). In some alternativeimplementations, the functions noted in the block may occur out of theorder noted in the figures. For example, two blocks shown in successionmay, in fact, be executed substantially concurrently, or the blocks maysometimes be executed in the reverse order, depending upon thefunctionality involved. It will also be noted that each block of theblock diagrams and/or flowchart illustration, and combinations of blocksin the block diagrams and/or flowchart illustration, can be implementedby special purpose hardware-based systems that perform the specifiedfunctions or acts or carry out combinations of special purpose hardwareand computer instructions.

Embodiments of the invention provide a personal navigation method andsystem that creates a route for a person using satellite imagery andbased on special needs of that person. FIG. 1 illustrates a personalnavigation system 100 in accordance with an embodiment of the invention.Generally, system 100 comprises a mobile user device 102 and navigationserver 104. Navigation server 104, in turn, includes processor 106,memory 110 and instruction module 112. A person 114 that uses thenavigation system is represented at 114; and FIG. 1 also shows asatellite 116 for obtaining satellite imagery, a data store 120 forstoring the satellite imagery, a Wide Area Network (WAN) such as theInternet 122, and a cellular communications network 124.

Generally, mobile device 102 communicates with navigation server 104over one or more wired and/or wireless networks. With the embodimentshown in FIG. 1, mobile device 102 communicates with navigation servervia cellular network 124 and the Internet 122. Navigation server 104receives user input from mobile device 102, determines or obtains abeginning location and an end location for user, and determines a numberof possible routes from the beginning location to the end location.Server 104 also analyzes those routes using satellite imagery, and basedon specified needs of the user and specified variables of the routes,and the server 104 selects one of the possible routes as a best routeand communicates this selected best route to the user.

Any suitable mobile device 102 can be used in embodiments of theinvention. Embodiments of the invention are well suited for use withportable mobile devices such as web-enabled cell phones, personaldigital assistants (PDAs), hand held navigation devices, portablecomputers, and other suitable devices.

In some implementations, both voice and data communications can beestablished over the wireless network 124. For example, the mobiledevice can place and receive phone calls (e.g., using VoIP protocols),send and receive e-mail messages (e.g. using POPS protocol), andretrieve electronic documents and/or streams, such as web pages,photographs, and videos, over the wireless network and wide area network(e.g., using TCP/IP or UDP protocols). In some implementations, themobile device can be physically directly connected to an access point ofthe Internet 122 using one or more cables. The access point can be apersonal computer, and in this configuration, the mobile device can bereferred to as a “tethered” device.

Navigation server 104 may be any suitable network device running anysuitable operating system and configured to communicate over a network.As discussed above, the navigation server includes processor 106, memory110 and instruction module 112. The processor is an arithmetic device,such as a central processing unit (CPU) or a micro processing unit(MPU), and executes programs stored in the memory. Furthermore, theprocessor controls functional sections of the navigation server. Thememory 110 is a primary storage unit that holds data, includingprograms, required for the processor to operate. Instruction module 112may be used to hold instructions for the processor.

The secondary storage device 120 is a non-volatile storage unit, such asa hard disk drive or a solid state drive (SSD). In the example of FIG.1, the secondary storage device stores satellite image data obtained bysatellite 116, and the storage device may store other data also. Thesecondary storage device 120 may be an external storage that isconnected to server via a network.

As will be appreciated by those of ordinary skill in the art,embodiments of the invention are not limited to the specific structuresshown in the drawings, and the structures discussed herein are onlyexamples used to illustrate features of the disclosure.

FIG. 2 illustrates an embodiment of the operation of system 100.

With reference to FIGS. 1 and 2, user 114 communicates with server 104through user device 102 to input a request to the navigation server fordirections. The user typically also inputs a desired destination 140 asthe end location. The user may communicate with the mobile device 102through a display/input (e.g., a graphic user interface that can includea screen, key pad, pointing device, speaker, microphone, or other inputmeans). Also, a suitable location sensor or antenna may be incorporatedwith the device to obtain the starting point or current location 142 forthe directions, or the starting point may be input by the user.

Special needs 144 of the user are input, determined or obtained. Thesespecial needs, for example, may be due to the user riding a bicycle orbeing in a wheelchair. These needs might be input by the user, or theymay be obtained from a database. Also, the user might not input thespecial needs themselves, but might input a condition, such as the userriding a bicycle or being in a wheelchair, and processor 106 may usethis condition as an index or a key to a database or table, or otherwiseuse the input condition, to identify the resulting special needs of theuser.

Processor 106, using the special needs of the user, and using satelliteimagery 146 from data store 120, identifies obstacles and obstructions150 in various possible routes from the start location to thedestination. Taking these obstacles and obstructions into account, theprocessor selects a best route 152 for the user and transmits that bestroute to the user device 102. The user device may output this selectedroute to the user through a display, print-out, or verbal instructions.

More specifically, at 146, satellite imagery of areas between thestarting location and the user's destination is obtained from storagedevice 120. Any suitable procedure may be used to determine an area ofinterest and to request satellite imagery of that area.

At 150, obstacles and obstructions and other localized terrain or streetlevel factors are identified from the satellite imagery. These obstaclesmay include sidewalk width, sidewalk ramps, terrain of sidewalks andstreets, estimated number of cars on the street, and the number oftraffic lanes. Any suitable map extrapolation procedure may be used toidentify these features in or from the satellite imagery. Based on theseidentified features, processor determines a best route for the user.

FIGS. 3 and 4 illustrate in more detail the procedure for determiningthis best route.

At 160, a group of variables are input, determined or identified basedon the user's special needs. These variables may include, for example,sidewalk width, sidewalk ramps, sidewalk obstacles, terrain slope, lanewidth, traffic flow, street direction, pedestrian crossing signals, andothers.

At 162, weights are assigned to these variables. These weights may bebased on, for example, user input or other factors. Based on theseweighted variables, processor selects a best route for the user.

In embodiments of the invention, at 164, a number of possible orcandidate routes are identified. For instance, as illustrated in FIG. 4,one route from the start to the destination is along path a, a secondroute is along path b, and a third route is along path c. For each ofthese possible routes, a score is generated at 166 based on theabove-mentioned weighted variables. Other factors may also be consideredwhen generating these scores. The best route for the user may beselected at 170 based on the scores generated for the various possibleroutes.

As an example scenario, a user in a wheelchair is leaving his currentlocation. The user uses mobile device 102 to access system 104 andenters his desired destination, and the user inputs that he has specialneeds and is on a wheelchair. The system 104 gets a satellite map withdetails between the user's current location and the destination point,and the system 104 uses image recognition software to analyze variablesdefined for people on wheelchairs. After analysis, system 104 traces thebest route for the user in a wheelchair.

In this example, the navigation system performs a number of steps. Thesystem uses GPS location software to determine the user's currentlocation, and the system uses image recognition software and imageextrapolation software to get all the data from the satellite imagery.The system checks for the special need for the user, if any, and thesystem uses several common variables and special variables based on theuser's special needs to determine the best route for the user.

Each variable has a weight based on the user's special needs. Some ofthe variable may be, for example, sidewalk width, sidewalk ramps,sidewalk obstacles, terrain slope, land width, traffic flow, streetdirection, pedestrian crossing signals, and others. Sidewalk obstaclesinclude, but are not limited to, vendor stands, holes in the sidewalk,benches on or alongside the sidewalk, steps, bus stops, and others. Thesystem uses these variables in order of highest to lowest priority toanalyze through image recognition and extrapolation software. Eachanalysis generates a score for all the possible routes, and the routewith the best score is presented to the user.

As mentioned above, embodiments of the invention provide a number ofimportant advantages. For instance, a person with special needs, like aperson on a wheelchair, can select the best route to his or herdestination. This will help a person with special needs get the bestroute based on that person's specific needs. As another example, acyclist will get the best route based on the most friendly environmentfor the cyclist's means of transportation. In addition, a pedestrianwill get the best route for walking purposes. The selection is not basedon the route itself, but on the best sidewalks, parks and pedestriancrossing signals along the route.

FIG. 5 depicts a diagram of a data processing system in accordance withan illustrative embodiment. Data processing system 200 is an example ofa computer, such as server or client, in which computer usable programcode or instructions implementing the processes may be located for theillustrative embodiments. In this illustrative example, data processingsystem 200 includes communications fabric 202, which providescommunications between processor unit 204, memory 206, persistentstorage 208, communications unit 210, input/output (I/O) unit 212, anddisplay 214.

Processor unit 204 serves to execute instructions for software that maybe loaded into memory 206. Processor unit 204 may be a set of one ormore processors or may be a multi-processor core, depending on theparticular implementation. Further, processor unit 204 may beimplemented using one or more heterogeneous processor systems, in whicha main processor is present with secondary processors on a single chip.As another illustrative example, processor unit 204 may be a symmetricmulti-processor system containing multiple processors of the same type.

Memory 206 and persistent storage 208 are examples of storage devices216. A storage device is any piece of hardware that is capable ofstoring information, such as, for example, without limitation, data,program code in functional form, and/or other suitable informationeither on a temporary basis and/or a permanent basis. Memory 206, inthese examples, may be, for example, a random access memory, or anyother suitable volatile or non-volatile storage device. Persistentstorage 208 may take various forms, depending on the particularimplementation. For example, persistent storage 208 may contain one ormore components or devices. For example, persistent storage 208 may be ahard drive, a flash memory, a rewritable optical disk, a rewritablemagnetic tape, or some combination of the above. The media used bypersistent storage 208 may be removable. For example, a removable harddrive may be used for persistent storage 208.

Communications unit 210, in these examples, provides for communicationwith other data processing systems or devices. In these examples,communications unit 210 is a network interface card. Communications unit210 may provide communications through the use of either or bothphysical and wireless communications links.

Input/output unit 212 allows for the input and output of data with otherdevices that may be connected to data processing system 200. Forexample, input/output unit 212 may provide a connection for user inputthrough a keyboard, a mouse, and/or some other suitable input device.Further, input/output unit 212 may send output to a printer. Display 214provides a mechanism to display information to a user.

Instructions for the operating system, applications, and/or programs maybe located in storage devices 216, which are in communication withprocessor unit 204 through communications fabric 202. In theseillustrative examples, the instructions are in a functional form onpersistent storage 208. These instructions may be loaded into memory 206for execution by processor unit 204. The processes of the differentembodiments may be performed by processor unit 204 using computerimplemented instructions, which may be located in a memory, such asmemory 206.

These instructions are referred to as program code, computer usableprogram code, or computer readable program code that may be read andexecuted by a processor in processor unit 204. The program code, in thedifferent embodiments, may be embodied on different physical or computerreadable storage media, such as memory 206 or persistent storage 208.

Program code 218 is located in a functional form on computer readablemedia 220 that is selectively removable and may be loaded onto ortransferred to data processing system 200 for execution by processorunit 204. Program code 218 and computer readable media 220 form computerprogram product 222. In one example, computer readable media 220 may becomputer readable storage media 224 or computer readable signal media226. Computer readable storage media 224 may include, for example, anoptical or magnetic disc that is inserted or placed into a drive orother device that is part of persistent storage 208 for transfer onto astorage device, such as a hard drive, that is part of persistent storage208. Computer readable storage media 224 also may take the form of apersistent storage, such as a hard drive, a thumb drive, or a flashmemory that is connected to data processing system 200. In someinstances, computer readable storage media 224 may not be removable fromdata processing system 200.

Alternatively, program code 218 may be transferred to data processingsystem 200 using computer readable signal media 226. Computer readablesignal media 226 may be, for example, a propagated data signalcontaining program code 218. For example, computer readable signal media226 may be an electro-magnetic signal, an optical signal, and/or anyother suitable type of signal. These signals may be transmitted overcommunications links, such as wireless communication links, an opticalfiber cable, a coaxial cable, a wire, and/or any other suitable type ofcommunications link. In other words, the communications link and/or theconnection may be physical or wireless in the illustrative examples. Thecomputer readable media also may take the form of non-tangible media,such as communications links or wireless transmissions containing theprogram code.

In some illustrative embodiments, program code 218 may be downloadedover a network to persistent storage 208 from another device or dataprocessing system through computer readable signal media 226 for usewithin data processing system 200. For instance, program code stored ina computer readable storage media in a server data processing system maybe downloaded over a network from the server to data processing system200. The data processing system providing program code 218 may be aserver computer, a client computer, or some other device capable ofstoring and transmitting program code 218.

The different components illustrated for data processing system 200 arenot meant to provide architectural limitations to the manner in whichdifferent embodiments may be implemented. The different illustrativeembodiments may be implemented in a data processing system includingcomponents in addition to or in place of those illustrated for dataprocessing system 200. Other components shown in FIG. 2 can be variedfrom the illustrative examples shown. The different embodiments may beimplemented using any hardware device or system capable of executingprogram code. As one example, data processing system 200 may includeorganic components integrated with inorganic components and/or may becomprised entirely of organic components excluding a human being. Forexample, a storage device may be comprised of an organic semiconductor.

As another example, a storage device in data processing system 200 isany hardware apparatus that may store data. Memory 206, persistentstorage 208, and computer readable media 220 are examples of storagedevices in a tangible form.

In another example, a bus system may be used to implement communicationsfabric 202 and may be comprised of one or more buses, such as a systembus or an input/output bus. Of course, the bus system may be implementedusing any suitable type of architecture that provides for a transfer ofdata between different components or devices attached to the bus system.Additionally, a communications unit may include one or more devices usedto transmit and receive data, such as a modem or a network adapter.Further, a memory may be, for example, memory 206 or a cache such asfound in an interface and memory controller hub that may be present incommunications fabric 202.

The description of the invention has been presented for purposes ofillustration and description, and is not intended to be exhaustive or tolimit the invention in the form disclosed. Many modifications andvariations will be apparent to those of ordinary skill in the artwithout departing from the scope of the invention. The embodiments werechosen and described in order to explain the principles and applicationsof the invention, and to enable others of ordinary skill in the art tounderstand the invention. The invention may be implemented in variousembodiments with various modifications as are suited to a particularcontemplated use.

The invention claimed is:
 1. A method of identifying a route for a userbased on satellite imagery analysis, comprising: identifying adestination for the user; identifying special needs of the user;obtaining satellite imagery of a specified area and storing thesatellite imagery in a database; a navigation system, using GPS locationsoftware to determine the user's current location, identifying aplurality of candidate routes for the user to the destination, usingimage recognition and extrapolation software to get image data from thesatellite imagery, checking for the special needs of the user, using aplurality of common variables and a plurality of special variables basedon the special needs of the user to determine a best route for the userto the destination, wherein each of the variables has a weight based onthe special needs of the user, and including using the variables, in anorder of highest to lowest priority, to analyze, through the imagerecognition and extrapolation software, to generate a score for each ofthe candidate routes, and presenting to the user the one of thecandidate routes with a best of the scores.
 2. The method according toclaim 1, wherein the variables include sidewalk obstructions.
 3. Themethod according to claim 2, wherein the sidewalk obstructions includeholes in the sidewalk.
 4. The method according to claim 2, wherein thesidewalk obstructions include benches alongside the sidewalk.
 5. Themethod according to claim 2, wherein the sidewalk obstructions includebus stops.
 6. The method according to claim 1, wherein the identifyingspecial needs of the user includes receiving input from the useridentifying said defined needs.
 7. The method according to claim 1,wherein the identifying special needs of the user includes accessing adatabase to identify the defined needs of the user.
 8. The methodaccording to claim 7, wherein the accessing a database to identify thedefined needs of the user includes receiving a specified condition inputfrom the user; and using the specified condition input from the user asa key to access the database to identify the defined needs of the user.9. The method according to claim 1, wherein: the user is walking to thedestination; and the selected route is a best route for the user forwalking to the destination based on given criteria.
 10. The methodaccording to claim 1, wherein: the user is riding a bicycle; and thespecial needs of the user are due to the user riding the bicycle.
 11. Anavigation system for identifying a route for a user based on satelliteimagery analysis, the navigation system comprising: a navigation serverincluding a memory for holding data and program instructions; and one ormore processor units connected to the memory for transmitting data toand receiving data from the memory, and said one or more processingunits being configured for: identifying a destination for the user;identifying special needs of the user; obtaining satellite imagery of aspecified area and storing the satellite imagery in a database; usingGPS location software to determine the user's current location,identifying a plurality of candidate routes for the user to thedestination, using image recognition and extrapolation software to getimage data from the satellite imagery, checking for the special needs ofthe user, using a plurality of common variables and a plurality ofspecial variables based on the special needs of the user to determine abest route for the user to the destination, wherein each of thevariables has a weight based on the special needs of the user, andincluding using the variables, in an order of highest to lowestpriority, to analyze, through the image recognition and extrapolationsoftware, to generate a score for each of the candidate routes, andpresenting to the user the one of the candidate routes with a best ofthe scores.
 12. The system according to claim 11, wherein the variablesinclude sidewalk obstructions.
 13. The system according to claim 12,wherein the sidewalk obstructions include holes in the sidewalk.
 14. Thesystem according to claim 12, wherein the sidewalk obstructions includebenches alongside the sidewalk.
 15. The system according to claim 12,wherein the sidewalk obstructions include bus stops.
 16. A computerreadable program product comprising: a computer readable medium havingcomputer program code tangibly embodied therein for identifying a routefor a user based on satellite imagery analysis, the computer programcode, when executed in a computer system, performing the following:identifying a destination for the user; identifying special needs of theuser; obtaining satellite imagery of a specified area and storing thesatellite imagery in a database; operating a navigation system for,using GPS location software to determine the user's current location,identifying a plurality of candidate routes for the user to thedestination, using image recognition and extrapolation software to getimage data from the satellite imagery, checking for the special needs ofthe user, using a plurality of common variables and a plurality ofspecial variables based on the special needs of the user to determine abest route for the user to the destination, wherein each of thevariables has a weight based on the special needs of the user, andincluding using the variables, in an order of highest to lowestpriority, to analyze, through the image recognition and extrapolationsoftware, to generate a score for each of the candidate routes, andpresenting to the user the one of the candidate routes with a best ofthe scores.
 17. The computer program product according to claim 16,wherein the identifying special needs of the user includes receivinginput from the user identifying said defined needs.
 18. The computerprogram product according to claim 16, wherein the identifying specialneeds of the user includes accessing a database to identify the specialneeds of the user.
 19. The computer program product according to claim18, wherein accessing a database to identify the defined needs of theuser includes receiving a specified condition input from the user; andusing the specified condition input from the user as a key to access thedatabase to identify the special needs of the user.
 20. The computerprogram product according to claim 16, wherein the identifying adestination for the user includes receiving information from a specifiedmobile communication device of the user, and using the receivedinformation for identifying said destination.